I would suggest you to update the drivers for your graphics card, here are the steps:
1. Open Windows Update by clicking the Start button. In the search box, type Update, and then, in the list of results, click Windows Update.
2. In the left pane, click Check for updates, and then wait while Windows looks for the latest updates for your computer.
3. If there are any available updates, click the link in the box under Windows Update to see more information about each update. Each type of update might include drivers.
4. On the Select the updates you want to install page, look for updates for your hardware devices, select the check box for each driver that you want to install, and then click OK. There might not be any driver updates available.
5. On the Windows Update page, click Install updates If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
